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Finding the Third Proportional to 154,438.50 and 198,121.50

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Solution

The third proportional to 154,438.50 and 198,121.50 is: 254,160.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,438.50 : 198,121.50 = 198,121.50 : x
  2. Step 2: Convert to fraction form
    154,438.50/198,121.50 = 198,121.50/x
  3. Step 3: Cross multiply
    154,438.50x = 198,121.50 × 198,121.50
  4. Step 4: Simplify right side
    154,438.50x = 39,252,128,762.25
  5. Step 5: Solve for x
    x = 39,252,128,762.25/154,438.50
  6. Step 6: Final answer
    x = 254,160.26

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.